Wallis
Wallis 12-20
The Wallis 12-20 is a standard-tread farm tractor produced from 1929 to 1932 by Wallis, a part of Massey-Harris, built in Racine, Wisconsin, USA. It features a Wallis 4.1L 4-cylinder liquid-cooled gasoline engine with a displacement of 248 ci (4.1 L), rated at 1000 RPM and started by hand-crank. The tractor has a 3-speed gear transmission with dry disc clutch, two-wheel drive, and manual steering with an open operator station. It delivers a claimed drawbar power of 12 hp and belt power of 20 hp, with tested drawbar and belt powers of 18.07 hp and 24.16 hp respectively. The tractor weighs 3455 lbs (1567 kg) and has dimensions of 121 inches length, 55 inches width, and 51 inches height. Tires are steel with sizes 28x5 front and 44x10 rear. The belt pulley diameter is 17 inches with a width of 6 inches, running at 540 RPM and a speed of 2400 ft/min.
Power22 hp[B]
Founded1929 - 1932
Model12-20
Technical Specifications
Detailed specifications and technical data for Wallis 12-20
Power
| Plows | 2 |
|---|---|
| Belt (tested) | 24.16 hp (18.0 kW) |
| Belt (claimed) | 20 hp (14.9 kW) |
| Drawbar (tested) | 18.07 hp (13.5 kW) |
| Drawbar (claimed) | 12 hp (8.9 kW) |
Tires
| Rear tire | 44x10 (steel) |
|---|---|
| Front tire | 28x5 (steel) |
Engine
| Aux. fuel | 1.75 gal (6.6 L) |
|---|---|
| Fuel tank | 15 gal (56.8 L) |
| Rated RPM | 1000 |
| Bore/Stroke | 3.875x5.25 inches (98 x 133 mm) |
| Displacement | 248 ci (4.1 L) |
| Engine model | Wallis 4.1L 4-cyl gasoline |
| Starter type | hand-crank |
Dimensions
| Width | 55 inches (139 cm) |
|---|---|
| Height | 51 inches (129 cm) |
| Length | 121 inches (307 cm) |
| Weight | 3455 lbs (1567 kg) |
| Wheelbase | 78 inches (198 cm) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | Manual steering |
| Operator station | Open operator station |
Production
| Type | Standard-tread tractor |
|---|---|
| Built in | Racine, Wisconsin, USA |
| Years produced | 1929 - 1932 |
Belt Pulley
| RPM | 540 |
|---|---|
| Speed | 2400 ft/min (731.52 meters/min) |
| Width | 6 inches (15 cm) |
| Diameter | 17 inches (43 cm) |
Transmission
| Type | gear |
|---|---|
| Gears | 3 forward and 1 reverse |
| Clutch | dry disc |